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Panasonic KX-MB262CX Service Manual
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Panasonic KX-MB262CX Service Manual

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Multi-Function printer 
Multi-Function printer 
KX-MB262CX
KX-MB262CX
KX-MB772CX
KX-MB772CX
(for Asia and Middle Near East)
(for Asia and Middle Near East)
© 2007 Panasonic Communications Co., Ltd. All
© 2007 Panasonic Communications Co., Ltd. All
ORDER NO.KMF0711125CE.
ORDER NO.KMF0711125CE.

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Summary of Contents for Panasonic KX-MB262CX

  • Page 1 ORDER NO.KMF0711125CE. ORDER NO.KMF0711125CE. Multi-Function printer  Multi-Function printer  KX-MB262CX KX-MB262CX KX-MB772CX KX-MB772CX (for Asia and Middle Near East) (for Asia and Middle Near East) © 2007 Panasonic Communications Co., Ltd. All © 2007 Panasonic Communications Co., Ltd. All...
  • Page 2 16.1. 16.1. For For Schematic Schematic Diagram----------------------------- Diagram------------------------------- -- 231 7.1. 7.1. OVERVIEW----------------- OVERVIEW------------------------------------ ------------------------------- ------------ 63 16.2. 16.2. KX-MB262CX KX-MB262CX MAIN MAIN BOARD------------------------232 BOARD------------------------232 7.2. 7.2. CONTROL CONTROL P P ANEL---------------------------- ANEL--------------------------------------- ----------- 64 16.3. 16.3. KX-MB772CX KX-MB772CX MAIN...
  • Page 3 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 1 1 S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n 1. 1. Before servicing, unplug...
  • Page 4 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 1. 1.3. 3. PERS RSO O NA NAL S L SAF AFET ETY P Y PR R EC ECA A UT UTI I ON ONS S 1. 1.3. 3.1 1 . . MOV V IN ING S G SEC...
  • Page 5 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 2 2 W W a a r r n n i i n n g g 2. 2.1. 1. ABOU OUT L T LEA EAD F D FRE REE S E SOL OLDE DER ( R (Pb PbF: F: Pb...
  • Page 6 KX-MB262CX/KX-MB772CX 2.2. Discarding of P. C. Board When discarding P. C. Board, delete all personal information such as telephone directory and caller list o r scrap P. C. Board. 2.3. INSULATION RESISTANCE TEST 1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
  • Page 7 C, 20—70% RH (Relative Humidity) × × Dimensions (H KX-MB262CX: Approx. height 255mm x width 420 mm x depth 445 m KX-MB772CX: Approx. height 305mm x width 420 mm x depth 445 m Mass (Weight): KX-MB262CX: Approx. 12kg KX-MB772CX: Approx. 13kg Power Consumption: Standby: Approx.
  • Page 8 KX-MB262CX/KX-MB772CX 4 General/Introduction 4.1. OPTIONAL ACCESSORIES Model No. Description Specifications KX-FAT92A/ KX-FAT92E Replacement toner cartridge 1 toner cartridge KX-FAD93A/ KX-FAD93E Replacement drum unit 1 drum unit...
  • Page 9 KX-MB262CX/KX-MB772CX Description of Pin Distribution (IC300) SOC (System On Chip) PIN NO. PinName POWER SUPPLY VOLTAGE EXPLANATION  A02 LEDONB 3.3V SCANNER INTERFACE  A03 NCCDON 3.3V SCANNER INTERFACE  A04 AFEMCLK 3.3V SCANNER INTERFACE  A05 NCCDCP 3.3V NOT USED  A06 CCDCLK 3.3V NOT USED  A07...
  • Page 10 KX-MB262CX/KX-MB772CX PIN NO. PinName POWER SUPPLY VOLTAGE EXPLANATION  AC26 BSPCLK 3.3V NCU INTERFACE  AD01 SDMD14 3.3V SDRAM DATA BUS 14  AD02 SDMD15 3.3V SDRAM DATA BUS 15  AD03  AD04 NBATRST 3.3V BATTERY RESET INPUT  AD05 VDD2RTC 1.2V POWER SUPPLY  AD06 3.3V...
  • Page 11 KX-MB262CX/KX-MB772CX PIN NO. PinName POWER SUPPLY VOLTAGE EXPLANATION  AF16 USBXOUT 3.3V CRYSTAL(12MHz) OUTPUT  AF17 LSI_TMS 3.3V NOT USED  AF18 LSI_TCK 3.3V NOT USED  AF19 LSI_CW_TAP 3.3V NOT USED  AF20 PSCIO0 3.3V INPUT PORT (REGIST)  AF21 PSCIO4 3.3V NOT USED  AF22 PSCIO12 3.3V...
  • Page 12 KX-MB262CX/KX-MB772CX PIN NO. PinName POWER SUPPLY VOLTAGE EXPLANATION VDD1.2 1.2V POWER SUPPLY PIO32 3.3V OPERATION PANEL INTERFACE CRMPWR 3.3V MOTOR CURRENT CONTROL PIO56 3.3V ADF MOTOR INTERFACE VDD1.2 1.2V POWER SUPPLY PIO48 3.3V FAN2 CONTROL PIO44 3.3V DC MOTOR INTERFACE VDD3.3...
  • Page 13 KX-MB262CX/KX-MB772CX PIN NO. PinName POWER SUPPLY VOLTAGE EXPLANATION PIO39 3.3V NOT USED SDMD24 3.3V SDRAM DATA BUS 24 SDMD25 3.3V SDRAM DATA BUS 25 SDMA1 3.3V SDRAM ADDRESS BUS 1 SDMAÇO 3.3V SDRAM ADDRESS BUS 0 PIO37 3.3V INPUT PORT (RING) PIO38 3.3V...
  • Page 14 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 6. 6.12 12.9 .9.2 .2. . Dr Drum um De Dete tect ctio ion n...
  • Page 15 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 6. 6.13 13. . OP OPER ERA A TI TION B ON BOA OARD S RD SEC ECTI TION The unit consists of a LCD (Liquid crystal display), KEYs and LEDs (light-emitting diodes). They are controlled by the Gate Array The unit consists of a LCD (Liquid crystal display), KEYs and LEDs (light-emitting diodes).
  • Page 16 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 6 6 . . 1 1 4 4 . . L L C C D S D SE E C C T T I I O O N N The Gate Array (IC1) works only for writing the The Gate Array (IC1) works only for writing the ASCII code from the data bus (D4~D7).
  • Page 17 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 6.15. 5. HVP HVPS (Hi S (High V gh Volt oltage P age Powe ower Sup r Supply ply) SEC ) SECTIO TION N 6. 6.15 15.1 .1. . HV HVPS PS SP SPEC ECIF IFIC ICA A TI TION...
  • Page 18 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 6. 6.15 15.3 .3. . DE DEV V DC DC BI BIAS AS UN UNIT IT When CHG REM is “L”, 5.425kHz PWM (Pulse Width Modulation) is input from IC300 to DEV CLK through Q504, developing When CHG REM is “L”, 5.425kHz PWM (Pulse Width Modulation) is input from IC300 to DEV CLK through Q504, developing...
  • Page 19 KX-MB262CX/KX-MB772CX 6.16. HEAT LAMP CONTROL CIRCUIT The temperature of the fixing part of the Fuser Unit is converted to a voltage by THERMISTOR and input to IC300-D19pin. The heat lamp is turned on/off by the HTRCTL signal (IC300-AD19pin) through the photo triac (PC2) and the triac (SCR51). And two thermostats are set on the AC line as the safety devices.
  • Page 20 KX-MB262CX/KX-MB772CX...
  • Page 21 KX-MB262CX/KX-MB772CX 2. Safety Protection a. 2 thermostats are provided with the unit, and the heater circuit is shut down when their surface temperatures became over  ° b. The heater control circuit of IC300 has the built-in function that the software turns off the heater control automatically if the heater is not turned ON every a fixed time.
  • Page 22 KX-MB262CX/KX-MB772CX Temperature  AD value HEX reading Temperature  AD value HEX reading Temperature  AD value HEX reading ° ° ° Note: The value is displayed on LCD at TEST FUNCTIONS (P.80) [#815].
  • Page 23 KX-MB262CX/KX-MB772CX The correspondence readings between temperature measured by fixing thermistor and HEX readings Temperature  AD value HEX reading Temperature  AD value HEX reading Temperature  AD value HEX reading ° ° °...
  • Page 24 KX-MB262CX/KX-MB772CX Temperature  AD value HEX reading Temperature  AD value HEX reading Temperature  AD value HEX reading ° ° ° 6.17. Main Board Section 3.3V Power Supply descriptions • IC 302 decreases the output voltage when NPN transistor installed chopper amplifier type switching regulator produces 2.3A min or over at the output voltage.
  • Page 25 KX-MB262CX/KX-MB772CX DC-DC Main Board Supply...
  • Page 26 KX-MB262CX/KX-MB772CX 8.1.5. CONNECTING TO A COMPUTER Panasonic Multi-Function Station software enables the unit to carry out the following functions: - Printing on plain paper and labels - Scanning documents and converting an image into text with OCR software - Scanning from other applications for Microsoft® Windows® that support TWAIN scanning...
  • Page 27 KX-MB262CX/KX-MB772CX Connect the unit with the USB cable (1), then click [Next]. • If the unit is connected to your computer, the model name will be automatically detected. • You can change the names for the printer, PC fax, and scanner if necessary.
  • Page 28 KX-MB262CX/KX-MB772CX 8.2. CONNECTIONS Caution: • The mains lead must remain connected at all times. • Never install telephone wiring during a lightning storm. • When you operate this product, the power outlet should be near the product and easily accessible.
  • Page 29 KX-MB262CX/KX-MB772CX Note: • If any other device is connected to the same telephone line, this unit may disturb the network condition of the device (KX- MB772CX only). • If you use the unit with a computer and your internet provider instructs you to install a filter , please connect it as follows (KX- MB772CX only).
  • Page 30 KX-MB262CX/KX-MB772CX 9 Operation Instructions 9.1. YOUR LOGO (KX-MB772CX only) You can program your logo (name, company name, etc.) so that it appears on the top of each page sent. • For entering characters, only the English alphabet, numbers and symbols are available. Chinese characters cannot be entered.
  • Page 31 KX-MB262CX/KX-MB772CX 9.1.1. TO SELECT CHARACTERS WITH THE DIAL KEYPAD The dial keypad is used to enter characters and numbers. - Press [ ] or [ ] to move the cursor. - Press dial keys to enter characters and numbers. - Press [STOP] to erase the character or number highlighted b y the cursor. Press and hold[STOP] to erase all characters or num- bers.
  • Page 32 KX-MB262CX/KX-MB772CX 10 Test Mode 10.1. TEST FUNCTIONS The codes listed below can be used to perform simple checks of some of the unit’s functions. When complaints are received from customers, they provide an effective tool for identifying the locations and causes of malfunctions.
  • Page 33 KX-MB262CX/KX-MB772CX 11.1.3. SERVICE FUNCTION TABLE (KX-MB772CX) Code Function Set Value Effective Default Remarks Range Pause time set X 100 msec 001~600 ---------- Dial speed select 1:10 pps 1, 2 ---------- 2:20 pps V34 transmission start speed 0: Disable If the code 527 is set at 2, the code 507 and 508 1: 33.6...
  • Page 34 KX-MB262CX/KX-MB772CX Code Function Set Value Effective Default Remarks Range Time between CED and 300bps 1:75 msec See Symptom/Countermeasure Table  for long 2:500 msec distance and international calls in (P.142). Refer to 3:1 sec (P.136) and (P.142). Overseas DIS detection select...
  • Page 35 KX-MB262CX/KX-MB772CX 11.1.4. SERVICE FUNCTION TABLE (KX-MB262CX) Code Function Set Value Effective Default Remarks Range Call Service Clear   Memory clear Refer to Memory Clear Specification (P.87). ROM check See (P.80). Scanner test See (P.80). Motor test See (P.80). LED test See (P.80).
  • Page 36 KX-MB262CX/KX-MB772CX 11.2. USER MODE (The list below is an example of the SYSTEM SETUP LIST the unit prints out.) (Example:KX-MB772CX) Note: The above values are the default values.
  • Page 37 KX-MB262CX/KX-MB772CX 11.3. SERVICE MODE SETTINGS (Example of a printed out list) (Example:KX-MB772CX) Note: The above values are the default values.
  • Page 38 KX-MB262CX/KX-MB772CX 11.4. HISTORY Note: See the following descriptions of this report. Item No. (1) ~ (49) are corresponding to the listed items in DESCRIPTIONS OF THE HISTORY REPORT(P.91).
  • Page 39 KX-MB262CX/KX-MB772CX 11.4.1. DESCRIPTIONS OF THE HISTORY REPORT (1) ROM VERSION (27) NUMBER OF PC-PRINT FLASH ROM version The number of times multifunction was used for the Printer. (2) SUM (The number of pages printed. If the unit does not have a FLASH ROM internal data calculation.
  • Page 40 KX-MB262CX/KX-MB772CX 12.3.6.2. CALL SERVICE 2 "CALL SERVICE 2" means that the synchronous signal out of the LSU cannot be d etected. The synchronous signal out of the LSU is detected by IC 300-G23pin. (NHSYNC) Note:  As for the "Pulse" waveform of the above flow chart, see the timing chart.
  • Page 41 KX-MB262CX/KX-MB772CX 12.3.6.3. CALL SERVICE 3 "CALL SERVICE 3" means that the temperature of the fuser does not rise up to or exceed a constant temperature. The temperature is monitored with the thermistor inside the fuser and detected with the voltage input into IC 300-D19.
  • Page 42 KX-MB262CX/KX-MB772CX 12.3.6.4. CALL SERVICE 4 "CALL SERVICE 4" means that the FAN does not run or the running of the FAN cannot be detected normally. The running of the FAN is detected by IC300-AC20 and W24pin. "CALL SERVICE 4" is displayed when it detects NG three times continuously.
  • Page 43 KX-MB262CX/KX-MB772CX 12.3.6.5. CALL SERVICE 5 “CALL SERVICE 5” means that Engine DC motor’s rotation detection signal (LD) does not become Low.
  • Page 44 KX-MB262CX/KX-MB772CX 12.3.6.6. CALL SERVICE 6 “CALL SERVICE 6” indicates that abnormal charge voltage is output from the high voltage unit.
  • Page 45 KX-MB262CX/KX-MB772CX 12.3.7. PRINT 12.3.7.1. GHOST IMAGE CROSS REFERENCE: HIGH VOLTAGE SECTION(P.166) POWER SUPPLY BOARD SECTION(P.60)
  • Page 46 KX-MB262CX/KX-MB772CX 12.3.7.2. DARK OR WHITE VERTICAL LINE Note: When wiping the cover glass, reflecting mirror, use a dry and soft cloth.
  • Page 47 KX-MB262CX/KX-MB772CX 12.3.7.4. DIRTY OR HALF DARKNESS BACKGROUND CROSS REFERENCE: HIGH VOLTAGE SECTION (P.166)
  • Page 48 KX-MB262CX/KX-MB772CX 12.3.7.5. BLACK PRINT CROSS REFERENCE: HIGH VOLTAGE SECTION (P.166) LSU (Laser Scanning Unit) SECTION (P.38)
  • Page 49 KX-MB262CX/KX-MB772CX 12.3.7.6. LIGHT PRINT CROSS REFERENCE: HIGH VOLTAGE SECTION (P.166)
  • Page 50 KX-MB262CX/KX-MB772CX 12.3.7.7. BLACK OR WHITE POINT 12.3.8. RECORDING PAPER FEED 12.3.8.1. MULTIPLE FEED...
  • Page 51 KX-MB262CX/KX-MB772CX 12.3.8.2. THE RECORDING PAPER IS WAVED OR WRINKLED...
  • Page 52 KX-MB262CX/KX-MB772CX 12.3.8.3. SKEW...
  • Page 53 KX-MB262CX/KX-MB772CX 12.3.8.4. THE RECORDING PAPER DOES NOT FEED CROSS REFERENCE: SENSOR SECTION (P.156) MOTOR SECTION (P.158)
  • Page 54 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX CROSS REFERENCE: CROSS REFERENCE: TEST FUNCTIONS TEST FUNCTIONS (P.80)  (P.80)
  • Page 55 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.3. 12.3.13. 13. INITIA INITIALIZIN LIZING G ERRO ERROR R  After the power is turn  After the power is turned on, the SOC (IC300) initializes ed on, the SOC (IC300) initializes and checks e and checks each IC.
  • Page 56 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.3.1 3.14. 4. ANA ANALOG SEC LOG SECTIO TION N This chapter provides the testing procedures required for the analog parts. A signal route to be This chapter provides the testing procedures required for the analog parts. A signal route to be tested is determined depending tested is determined depending upon purposes.
  • Page 57 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.3.14.2. DEFECTIVE ITS (Integr 12.3.14.2. DEFECTIVE ITS (Integrated T ated Telephone System elephone System) SECTION ) SECTION 1. No handset and speakerphone transmission / reception 1. No handset and speakerphone transmission / reception Perform a signal test in the Perform a signal test in the ITS or the NCU section ITS or the NCU section and locate a defective point (where the signal disappears) on each route...
  • Page 58 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 4. No tone dialing 4. No tone dialing CROSS REFERENCE: CROSS REFERENCE: CHECK SHEET CHECK SHEET (P.152)  (P.152) 12.3.14.3. 12.3.14.3. DETECTIVE T DETECTIVE TAM INTERF AM INTERFACE SECTION ACE SECTION 1. 1. The FAX turns on, but does not arrive through TAM.
  • Page 59 KX-MB262CX/KX-MB772CX 12.3.15. OPERATION PANEL SECTION Refer to TEST FUNCTIONS (P.80). 1. NO KEY OPERATION 2. NO LCD INDICATION CROSS REFERENCE: TEST FUNCTIONS (P.80)
  • Page 60 KX-MB262CX/KX-MB772CX 12.3.16. SENSOR SECTION Refer to SENSORS AND SWITCHES for the circuit description. Perform an SENSOR CHECK to determine if the sensor is operating correctly. 1. Check the pickup sensor ..“FAILED PICKUP” 2. Check the paper exit sensor..“PAPER JAMMED”...
  • Page 61 KX-MB262CX/KX-MB772CX 5. Check the print timing sensor ..“PAPER JAMMED” 6. Check the document sensor  7. Check the top cover sensor ..“TOP COVER OPEN” 8. Check the toner sensor ..“TONER LOW”, “CHANGE DRUM” CROSS REFERENCE: SENSORS AND SWITCHES SECTION (P.40)
  • Page 62 KX-MB262CX/KX-MB772CX 12.3.17. MOTOR SECTION 12.3.17.1. ENGINE MOTOR...
  • Page 63 KX-MB262CX/KX-MB772CX 12.3.17.2. FB (Flatbed) MOTOR...
  • Page 64 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.3.2 3.22. 2. USB USB SEC SECTIO TION N Troubleshooting Troubleshooting 1. Confirmation of the PC settings 1. Confirmation of the PC settings...
  • Page 65 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 2. Confirmation of the main unit 2. Confirmation of the main unit...
  • Page 66 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX USB (Universal Serial Bus) block USB (Universal Serial Bus) block Description Description This is a USB block for data This is a USB block for data communication with PC. communication with PC. Two signal lines (D+/D-) are differential Two signal lines (D+/D-) are differential signals which work in reverse phase.
  • Page 67 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX Waveform of normal operation Waveform of normal operation...
  • Page 68 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.3. 12.3.23. 23. MAIN MAIN BOARD BOARD SECT SECTION 3.3V TROUBLESHOOTING GUIDE 3.3V TROUBLESHOOTING GUIDE...
  • Page 69 KX-MB262CX/KX-MB772CX 1.2V TROUBLESHOOTING GUIDE...
  • Page 70 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.3.24.2. 12.3.24.2. TROUBLESHOOTING TROUBLESHOOTING FLOW FLOW CHART CHART 12.3.24.3. 12.3.24.3. BROKEN P BROKEN PARTS REP ARTS REPAIR DET AIR DETAILS AILS (D10~D13) (D10~D13) Check for a short-circuit in terminal 4. If Check for a short-circuit in terminal 4. If D10~D13 is short-circuit, F2 will melt (open).
  • Page 71 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.4. 12.4. DOCU DOCUMENT MENT JAMS JAMS (AUT (AUTO DOC O DOCUMEN UMENT FEE T FEEDER) (K DER) (KX-MB7 X-MB772CX O 72CX ONL NLY) Caution: Caution: • • Do not pull out the jammed document forcibly before Do not pull out the jammed document forcibly before lifting the ADF lifting the ADF cover.
  • Page 72 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX When the document has jammed near the When the document has jammed near the document exit: document exit: 3. 3. Close the ADF cover. Close the ADF cover.
  • Page 73 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 12.5 .5. . RE RECO CORD RDIN ING G P P AP APER ER JA JAM M 12.5. 12.5.1. 1. When When the r the recor ecording ding pa paper per has has jamme jammed ins d inside o...
  • Page 74 KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX 3. Close the paper input tray. 3. Close the paper input tray. • • Open and close th Open and close the top cover (4) to e top cover (4) to clear the error message. clear the error message.
  • Page 75 KX-MB262CX/KX-MB772CX 3. Remove the jammed paper (6) carefully by pulling it upwards. Remove the jammed paper (7) carefully by pulling it toward you. 4. Close the paper input tray.
  • Page 76 KX-MB262CX/KX-MB772CX 5. Close the top cover until locked. Caution: • To prevent injuries, be careful not to put your hands under the top cover. Case 3: When the recording paper has jammed near t he fuser unit: 1. Lift the top cover release lever (1) and open the top cover (2).
  • Page 77 KX-MB262CX/KX-MB772CX 2. Lift both green levers (5) until they stop. 3. Remove the jammed paper (6) carefully by pulling it upwards. 4. Push back the green levers (7) to the original position.
  • Page 78 KX-MB262CX/KX-MB772CX 5. Close the top cover until locked.
  • Page 79 KX-MB262CX/KX-MB772CX 12.5.2. When the recording paper is not fed into the unit properly The display will show the following. Pull the paper input tray until it clicks into place, then put it com- pletely out, lifting the front part of the tray. Remove the recording paper and straighten.
  • Page 80 KX-MB262CX/KX-MB772CX 12.5.3. When the recording paper in the manual input tray is not fed into the unit properly The display will show the following. Remove the recording paper. Re-insert the recording paper. Note: • If the error message is still displayed, check the recording paper specifications and re-install recording paper.
  • Page 81 KX-MB262CX/KX-MB772CX 15.3.7. FIXING On the process of the transfer, the transferred toner is weakly attached on the paper. Fixing means the process to fix the toner on the paper permanently. The fixing part melts the toner at the high temperature using the halogen heater. The toner is fixed on the paper by the heat and pressure through the fixing part with the image.
  • Page 82 KX-MB262CX/KX-MB772CX 15.4. TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 15.4.1. MAIN BOARD (1)
  • Page 83 KX-MB262CX/KX-MB772CX 15.4.2. MAIN BOARD (2) 15.4.3. OPERATION BOARD...
  • Page 84 KX-MB262CX/KX-MB772CX 15.5. HOW TO REPLACE THE FLAT PACKAGE IC Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
  • Page 85 KX-MB262CX/KX-MB772CX 15.5.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux to all pins of the FLAT PACKAGE IC.
  • Page 86 KX-MB262CX/KX-MB772CX 15.6. MAIN BOARD SECTION When the unit fails to boot up the system, take the troubleshooting procedures very carefully. It may have a serious problem. The symptom: No response when the power is turned on. (No LCD display, and keys are not accepted.) The first step is to check the power source.
  • Page 87 KX-MB262CX/KX-MB772CX 15.6.1. NG EXAMPLE...
  • Page 88 KX-MB262CX/KX-MB772CX 15.7. TEST CHART 15.7.1. ITU-T No.1 TEST CHART...
  • Page 89 KX-MB262CX/KX-MB772CX 15.7.2. ITU-T No.2 TEST CHART...
  • Page 90 KX-MB262CX/KX-MB772CX 16 Schematic Diagram 16.1. For Schematic Diagram Note: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
  • Page 91 KX-MB262CX/KX-MB772CX 16.2. KX-MB262CX MAIN BOARD 16.2.1. MAIN BOARD (1) IC300 2:3E SDMD[0-15] FRMD[0-7] SDMD[0] FRMD[0] T1 SDMD0 2:2F FRMD0 SDMD[1] FRMA[0-23] T2 SDMD1 FRMD[1] FRMD1 SDMD[2] RA320 FRMD[2] U1 SDMD2 FRMD2 SDMD[3] FRMD[3] U2 SDMD3 FRMD3 SDMD[4] V1 SDMD4 FRMD[4]...
  • Page 92 KX-MB262CX/KX-MB772CX +3.3V    k    k    k    k    k    k    k    k    k    k    0    0    0    0    0    0    0    0    0    0    1    1    1    1    1    1    1    1    1    1    5    6    5    1    2    3    0    4    9...
  • Page 93 KX-MB262CX/KX-MB772CX +3.3V +24V L372    k    7    2    )    1  .    3    C   u    0    V    2    V    3    0    V    3    N    0    (    2    3    0    6    A    3    9    8    0    R    3  .    5    D C375 Z0.33u    D...
  • Page 94 KX-MB262CX/KX-MB772CX 17.3.6. FLATBED RELAY BOARD    A   2   6    N    C   4 4  P     4 F   U     0 P     6 1     N    F    F  6     C   -    b  5   9     P 1     Z    1 Z  P     9  b  1     5 2 ...
  • Page 95 KX-MB262CX/KX-MB772CX 18 Exploded View and Replacement Parts List 18.1. CABINET, MECHANICAL AND ELECTRICAL PARTS LOCATION 18.1.1. OPERATION PANEL SECTION...
  • Page 96 KX-MB262CX/KX-MB772CX 18.1.2. TOP COVER SECTION...
  • Page 97 KX-MB262CX/KX-MB772CX 18.1.3. ADF SECTION (KX-MB772CX ONLY)
  • Page 98 KX-MB262CX/KX-MB772CX 18.1.4. MOTOR SECTION (KX-MB772CX ONLY)
  • Page 99 KX-MB262CX/KX-MB772CX 18.1.5. LOWER CABINET SECTION...
  • Page 100 KX-MB262CX/KX-MB772CX 18.2.3. MAIN BOARD (KX-MB772CX) Ref. Part No. Part Name & Description Remarks  No. R547 ERJ2GEJ471 R548 ERJ3GEYJ1R2 Ref. Part No. Part Name & Description Remarks R549 ERJ2GEJ330  No. R550 ERJ2GEJ122 1.2k P CB1 P FW P1 MB 77 2CX...
  • Page 101 KX-MB262CX/KX-MB772CX Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks  No.  No. (CAPACITORS) C354 ECJ0EF1C104Z C100 ECUE1A104KBQ C355 ECJ0EF1C104Z C101 ECUE1H101JCQ 100p C357 ECJ0EF1C104Z C102 ECUE1A104KBQ C358 ECJ0EF1C104Z C104 F1LAF3300002 C359 ECJ0EF1C104Z C360...
  • Page 102 KX-MB262CX/KX-MB772CX Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks  No.  No. C525 ECUV1H104ZFV C682 ECJ0EF1C104Z C526 ECUE1H102KBQ 0.001 C684 ECJ0EF1C104Z C527 ECUE1H102KBQ 0.001 C685 ECJ0EF1C104Z C528 ECUE1H102KBQ 0.001 C687 ECJ0EF1C104Z C529 ECUE1H102KBQ 0.001...
  • Page 103 KX-MB262CX/KX-MB772CX Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks  No.  No. R134 ERG1SJ120E R387 ERJ2GEJ105X R136 ERJ3GEYJ560 R388 ERJ2GEJ184 180k R137 ERJ3GEYJ560 R389 ERJ2GEJ102 R200 ERJ2GEJ154 150k R391 ERJ2GEJ104 100k R201 ERJ2GEJ154...
  • Page 104 KX-MB262CX/KX-MB772CX Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks  No.  No. R563 ERJ2GEJ101 L345 J0JCC0000286 IC FILTER R564 ERJ2RKF1802 L346 J0JCC0000286 IC FILTER R565 PQ4R18XJ472 4.7k L347 J0JCC0000286 IC FILTER R566 ERJ2GEJ103...
  • Page 105 KX-MB262CX/KX-MB772CX Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks  No.  No. ECUV1H391JCV 390p ECUV1H152KBV 0.0015 ECUV1H391JCV 390p ECUV1H152KBV 0.0015 ECUV1H103KBV 0.01 (LCD) ECUV1C104ZFV L5DAAFB00001 LIQUID CRYSTAL DISPLAY ECUV1C104ZFV (CONNECTOR) ECUV1H101JCV 100p K1KA08B00243...
  • Page 106 KX-MB262CX/KX-MB772CX 18.2.6.4. REGISTRATION BOARD 18.2.7. HIGH VOLTAGE POWER BOARD Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks  No.  No. P CB 6 P FLP 19 11 MZ -D R EG IS TR ATI ON...
  • Page 107 KX-MB262CX/KX-MB772CX  KXMB262CX KXMB772CX...

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